HE'S a self-confessed "geek" and Ryan Tubridy certainly proved it when he stepped out to train with Irish rugby internationals Rob and Dave Kearney this week.

The RTE broadcaster joined the Dundalk brothers for a quick fitness session in Dublin's Merrion Square, ahead of their interview on tonight's Late Late Show.

While he briefly ventured onto the pitch during his time as a student at Blackrock College, the father-of-two's rugby skills were more than a little "rusty", according to an RTE colleague.

"I think it was the first time that any of the crew saw Ryan out of his usual jeans and blazer, he was a sight for sore eyes," an insider told the Herald.

Donning an Ireland jersey, tracksuit and runners, the 40-year-old brushed up on his kicking skills, while also picking up some on-field tips from the heartthrobs.

Rob and Dave will appear on the Late Late Show tonight to discuss playing together for both province and country.

Philomena Lee will also be taking to the show's couch, following her brilliant appearance on the recent Golden Globe Awards.

The UK-based nurse will join the TV and radio host to discuss the Academy Award nomination of the film Philomena, and what it's like to have Dame Judi Dench playing her on screen.

The movie is based on the 2009 book by former BBC journalist Martin Sixsmith and follows Ms Lee's journey to discover what happened to her son Anthony, after 50 years of keeping his existence a secret.

American actor Josh Hartnett will also join the guests.

He is taking time out of his busy filming schedule of Showtime's new eight-part series Penny Dreadful. Hartnett has been based here since October.